While not completely on subject there is a good portion of the movie which covers the Confederacy's attempt to seize the Southwest. Where for the most part the Confederacy was very un-welcome in the New Mexico Territory the Arizona Territory was much more pro-Confederacy.
Also in the storyline Jean Arthur character Phoebe Titus makes the start of her fortune by baking pies. There wasn't a lot of sweets available on the frontier and many a living and a fortune was made by those who could bake pies or cook up a batch of 'Bear Sign' (Donuts). Something to think about should the SHTF.
I recently DVR'd the movie and am burning a copy for my Dad a big western fan (and in this the apple doesn't fall far from the tree.